• An undated photo made available by the University of Birmingham, England,  of a man driving a vehicle with surveying instruments near to Stonehenge where a hidden complex of archaeological monuments has been uncovered using hi-tech methods of scanning below the Earth's surface. (AP Photo/University of Birmingham, Geert Verhoeven)  NOTE TO EDITORS: This handout photo may only be used in for editorial reporting purposes for the contemporaneous illustration of events, things or the people in the image or facts mentioned in the caption. Reuse of the picture may require further permission from the copyright holder.

    An undated photo made available by the University of Birmingham, England, of a man driving a vehicle with surveying instruments near to Stonehenge where a hidden complex of archaeological monuments has been uncovered using hi-tech methods of ... scanning below the Earth's surface. (AP Photo/University of Birmingham, Geert Verhoeven) NOTE TO EDITORS: This handout photo may only be used in for editorial reporting purposes for the contemporaneous illustration of events, things or the people in the image or facts mentioned in the caption. Reuse of the picture may require further permission from the copyright holder. (The Associated Press)

  • An undated photo made available by the University of Birmingham, England, of Stonehenge where a hidden complex of archaeological monuments has been uncovered using hi-tech methods of scanning below the Earth's surface. (AP Photo/University of Birmingham, Geert Verhoeven)

    An undated photo made available by the University of Birmingham, England, of Stonehenge where a hidden complex of archaeological monuments has been uncovered using hi-tech methods of scanning below the Earth's surface. (AP Photo/University of ... Birmingham, Geert Verhoeven) (The Associated Press)

High-tech survey looks beneath Stonehenge, finds previously unknown monuments

Features Associated Press

A high-tech survey reveals that there is more to Stonehenge than meets the eye, finding previously unknown monuments.

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Researchers have produced digital maps of what's beneath the World Heritage Site, using ground-penetrating radar, high-resolution magnetometers and other techniques to peer deep into the soil.

Birmingham University said Wednesday that the project produced detailed maps of 17 previously unknown ritual monuments and a massive timber building which is thought to have been used for burial ceremonies.

The project leader, Professor Vincent Gaffney of Birmingham University, says the findings included types of monuments previously unknown to archaeologists.

Professor Wolfgang Neubauer of Germany's Ludwig Boltzmann Institute says the new maps make it possible at last to reconstruct the development of Stonehenge over its 11,000-year history.